We all are aware of the higher risk involved in trading than HODLing and it has always been advisable to HODL rather than trade especially to Beginners. Just few days after new year this happened :Market dip hit crypto traders with over $650 million in long liquidations last week. This gives more reasons to avoid trading especially for beginners, since traders may usually fall into pump and dump Schemes and trading especially when trading Altcoins. Its advisable to HODL but the reason I made this post is about from the fact that, we know the surety of HODLing bitcoin, it can be HODL for over a decade but this is not true for most altcoins. Though I have 2 altcoins I can advice anyone to HODL which are Solona and Ethereum while I may have surety of HODLing altcoins for at most 2 years maybe with an exception of Ethereum which I may HODL longer.
I know there are other altcoins worth HODLing but I guess my knowledge is quite vague about investing and HODLing altcoins and so I will like to ask the questions.

• How do you know an altcoin will be good for HODLing?
• How many years if surety do you have in HODLing altcoins and which altcoins are you currently HODLing?